Computer server



FIG. 1 is a front perspective view of a computer server showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view.

The broken lines immediately adjacent shaded and claimed surfaces represent boundaries of the claim and form no part thereof; all other broken lines depict unclaimed portions of the computer server that form no part of the claim. 

CLAIM The ornamental design for a computer server, as shown and described. 